Sidelink Collision Handling With Dynamic Inter-UE Priority Rules
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Solution Overview
Problem
Existing wireless communication systems face challenges in handling collisions between inter-user equipment (UE) coordination communications and other communications, leading to suboptimal prioritization and negative impacts on UE operations due to inefficient resource allocation and differing UE capabilities.
Innovation Solution
Implementing a priority rule-based resolution mechanism to identify and resolve collisions between inter-UE coordination communications and other communications, such as sidelink or Uu interface communications, by determining resource allocation based on priority rules to prevent actual collisions and optimize network resource use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If inter-UE coordination communications are prioritized to improve coordination reliability, then collision resolution capability improves, but resource allocation efficiency deteriorates due to rigid prioritization
Solution Approach 1:
The patent implements dynamic prioritization where the priority of inter-UE coordination communications is not fixed but adapts based on current channel conditions, buffer status, and traffic characteristics. The network can dynamically adjust priority levels through RRC signaling or MAC CE, allowing the system to optimize between reliability and resource allocation efficiency based on real-time conditions rather than using rigid static prioritization
Solution Approach 2:
The patent changes the parameter of priority level from a static configuration to a dynamically adjustable parameter. By modifying priority parameters through network signaling (RRC reconfiguration or MAC control elements), the system can adapt the prioritization behavior to match current network conditions, traffic patterns, and UE capabilities, thereby resolving the contradiction between ensuring coordination reliability and maintaining resource allocation efficiency
2Reliability
If priority rules are made more complex to handle diverse collision scenarios, then collision resolution capability improves, but processing complexity increases
Solution Approach 1:
The patent segments the collision resolution mechanism into distinct priority levels and corresponding handling procedures. Instead of using a single complex set of rules that must handle all scenarios, the system divides collision scenarios into categories based on communication type (UL, DL, sidelink) and applies simplified priority-based rules specific to each category. This segmentation reduces processing complexity while maintaining comprehensive collision resolution capability
Solution Approach 2:
The patent introduces an intermediary priority indication mechanism that mediates between different communication types. Rather than implementing complex direct conflict resolution logic, the system uses priority indicators (configured by the network) as an intermediary layer that automatically determines the winning communication. This intermediary approach simplifies the processing logic at the UE while maintaining robust collision resolution across diverse scenarios
3Ease of operation
If UE-specific priority configurations are implemented to account for differing UE capabilities, then operation optimization improves, but signaling overhead increases
Solution Approach 1:
The patent implements a universal priority configuration mechanism that serves multiple functions simultaneously. The same priority indication framework is used for both inter-UE coordination communications and regular data communications, allowing a single signaling structure to optimize operations across different communication types. This multi-functionality reduces signaling overhead compared to implementing separate configuration mechanisms for each communication type
Solution Approach 2:
The patent enables UEs to self-configure their priority handling behavior based on their specific capabilities and conditions. UEs can autonomously determine their priority levels for different communication types based on their buffer status, channel conditions, and capability information, reducing the need for extensive network signaling. The network only provides high-level guidance while UEs perform fine-grained self-optimization, thereby reducing signaling overhead while maintaining operation optimization
Data Source
AI summary
Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify a collision between an inter-UE coordination communication to be transmitted or received by the UE and another communication. The UE may perform at least one of the inter-UE coordination communication or the other communication based at least in part on a resolution of the collision based at least in part on a priority rule. Numerous other aspects are provided.